How do you set the font in effect strip
Ok, I figured this one out.

tFont = 'fonts/' + row3[7] + '.ttf' # read font from .csv data file
fnt = bpy.data.fonts.load(tFont) # load font
bpy.context.scene.sequence_editor.sequences_all[tField].font = fnt # change font
bpy.context.scene.sequence_editor.sequences_all[tField].text = 'Text' # use font